If the repair was successful, the LED will flash red and green. If it wasn’t, you will see the red
LED still on and you will have to try to resolve the issue again. Once you’re ready, press the
middle button again.
Press right MMU2S button to resume print. The printer will automatically preheat nozzle and
continue printing.
13.2 MMU needs user attention - Blinking red LED
This is related to the situation, when the printer isn't printing and following messages are
displayed on the screen: “MMU needs user attention.”, “Press the knob to resume nozzle
temperature.”.
Pict. 35 - LCD notes, while printer is paused because of unsuccessful operation
The extruder stops at the back left corner and seemingly nothing is happening for several
minutes. See if one of the MMU LEDs is blinking red. Blinking red light signalizes that the
filament got stuck during loading/unloading.
●
Slow flashing
- fault during filament
load
● Rapid flashing
- fault during filament
unload
The print will remain paused until the problem is resolved.
How to solve a problem related to filament
unload - rapid flashing:
1. Remove the orange/white PTFE tube by unscrewing the silver fittings from MMU2S
body.
2. Check whether there’s a filament string stuck in the MMU2S’s selector.
3. Pull the filament out from the orange/white PTFE tube.
a. If you’re unable
to remove the filament from the tube, proceed to the other
end of the tube.
b. Release the Festo fitting on the extruder and if needed open the extruder idler
c. Then pull the filament out from the extruder body.
4. Pull out the filament (approximately 10 cm) from the MMU2S unit to the front. Cut the
filament and leave about 1 cm sticking out. Create a sharp tip.
5. The
middle button
will be used now. Press it once and wait for the printer to finish
the auto-check procedure.
6. If the procedure
finishes correctly
, the LED above affected filament will turn to
red-green flashing
, if the
procedure fails
it will remain
red
.
38
Summary of Contents for i3 MK2.5S Multi Material Upgrade 2S
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